Home / 31,310.91-46,981.53-13,778.46

Finding the Fourth Proportional to 31,310.91, 46,981.53 and 13,778.46

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Solution

The fourth proportional to 31,310.91, 46,981.53 and 13,778.46 is: 20,674.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,310.91 : 46,981.53 = 13,778.46 : x
  2. Step 2: Convert to fraction form
    31,310.91/46,981.53 = 13,778.46/x
  3. Step 3: Cross multiply
    31,310.91x = 46,981.53 × 13,778.46
  4. Step 4: Simplify right side
    31,310.91x = 647,333,131.84
  5. Step 5: Solve for x
    x = 647,333,131.84/31,310.91
  6. Step 6: Final answer
    x = 20,674.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.